Stability of the species Li_2, Li_2^- and Li_ | vedclass

Name: PDF Generator App | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

Correct option

(b) $\mathrm{Li}_{2}-<\mathrm{Li}_{2}^{+}<\mathrm{Li}_{2}$

Explanation:

$\mathrm{Li}_{2}(3+3=6)=\sigma 1 \mathrm{s}^{2},

Vedclass · Accepted Answer

$Li_2^- < Li_2^+ < Li_2$

Vedclass · Answer

Correct option (b) $\mathrm{Li}_{2}-<\mathrm{Li}_{2}^{+}<\mathrm{Li}_{2}$ Explanation: $\mathrm{Li}_{2}(3+3=6)=\sigma 1 \mathrm{s}^{2}, \quad \hat{\sigma} 1 \mathrm{s}^{2}, \sigma 2 \mathrm{s}^{2}$ Bond order $=\frac{N_{b}-N_{a}}{2}=\frac{4-2}{2}=1$ $\mathrm{Li}_{2}^{+}(3+3-1=5)=\sigma 1 \mathrm{s}^{2}, \dot{\sigma}^{2} 1 s^{2}, \cdot \sigma 2 s^{1}$ Bond order $=\frac{3-2}{2}=\frac{1}{2}=0.5$ Bond order $=\frac{4-3}{2}=\frac{1}{2}=0.5$ Stability order is $\mathrm{Li}_{2}>\mathrm{Li}_{2}^{+}>\mathrm{Li}_{2}^{-}$ (because Li $_{2}^{-}$ have more number of electrons in antibonding orbitals which destabilises the species).

Stability of the species $Li_2, Li_2^-$ and $Li_2^+$ increases in the order of :

Similar Questions

What is chemical bonding ? How it is formed and give its types.

Molecular orbital theory was developed mainly by

Which information obtained by electronic configuration of Molecule in $\mathrm{MO}$ ?

During change of $O_2$ to $O_2^-$ ion, the electron adds on which one of the following orbitals